#app{
    padding: 1rem;
    display: flex;
    height: 100%;
    justify-content: center; 
    align-items: center;
    color: red;
    font-size: 10rem;
    flex-direction: column;
    text-shadow: 0px 0px 10px ;
    .txt {
        font-size: 3rem;
    }
}
@keyframes blink {
    0%   {opacity: 0}
    49%  {opacity: 0}
    50%  {opacity: 1}
    100% {opacity: 1}
}
.blink {
    animation-name: blink;
    animation-duration: 1s;
    animation-iteration-count: infinite;
}